P5 Forces Flashcards
Formula for weight
Weight = Mass × Gravity.
What is a free body diagram
Free-body diagrams are diagrams used to show the relative magnitude and direction of all forces acting upon an object in a given situation.
What is a resultant force
A stationary object remains stationary if the sum of the forces acting upon it - resultant force - is zero
Formula of work done by a force
work done = force x distance
What is the gravitational force
The force of attraction between masses
What is the formula for weight
Mass (kg) x Gravitational Field strength (N/kg)
What do you use scale drawings for
To find resultant forces
What is the formula for force in springs
Spring constant (N/m) x Extension (m)
What is equilibrium
When the forces are balanced
Extension is directly opposite to what
Force
What is the formula for elastic potential energy
1/2 x spring constant x extention
What is the formula for distance travelled
Speed (m) x time (s)
What is the formula for acceleration
Change in velocity (m/s) ➗time (s)
What is acceleration proportional to
Resultant force
